magnifying glass

American  

noun

1. a lens that produces an enlarged image of an object.

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magnifying glass British  

noun

1. a convex lens used to produce an enlarged image of an object

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Etymology

Origin of magnifying glass

First recorded in 1655–65

Example Sentences

Ternus was on the road at the supplier’s facility, and sometime after midnight he pulled out a magnifying glass to count the circles, finding that the supplier had gotten it wrong, putting in 35 grooves.

From Barron's • Apr. 22, 2026

Do you really think that foreign governments are at this point, with a magnifying glass, looking at our markets and thinking something might be about to happen?

From Slate • Mar. 31, 2026

As most Angelenos will know, the further you move inland, the more the sun feels like someone’s shoved a magnifying glass in front of it.

From Los Angeles Times • Sep. 3, 2025

Pattern maker Mar Marcote has been with the business 42 years and still uses a magnifying glass to examine each item of clothing before it finally goes into production.

From BBC • May 8, 2025

She raised her magnifying glass to her eye and leaned in close, studying him.

From "Flora & Ulysses: The Illuminated Adventures" by Kate DiCamillo